2012-2018 Audi A6 Dash Ambient Light Sensor Used OEM 4G0907539A

Genuine Audi OEM ambient light sensor (part number 4G0907539A, OE 4G0-907-539-A). This sensor, mounted on the dashboard, detects ambient (outside / cabin) light levels to control features like automatic headlights, interior lighting dimming, and sun load adjustments. Replacing a faulty or non-responsive sensor restores proper lighting behaviour (auto headlamps, dashboard dimming), improves comfort, and ensures that lighting systems respond correctly to changing light conditions.

Details:

• VIN: WAUBHC4G5CN026396

• Part Number: 4G0907539A (OE 4G0-907-539-A; also listed as 4G0907539A4PK)

• Compatibility:

  • Audi A6 (C7) 2012-2018

  • Audi A7, S6, S7, RS7, and Q3 in matching model years when equipped with ambient light / sunload sensor options.

• Function: Ambient Light / Sun‐Load Sensor -- measures light intensity to allow the vehicle to auto‐adjust headlights, instrument cluster backlighting, internal ambient lighting, possibly sunshade or climate control adjustments depending on equipment.

• Condition: Used OEM -- inspect sensor for lens clarity (no cracks or haze), connector pins clean and free of corrosion, sensor mounting should be secure and oriented correctly (incorrect placement/orientation can lead to false readings).

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OEM parts are built to factory specifications, ensuring the right fit, performance, and safety compared to aftermarket alternatives. We sell parts pulled from the vehicles. They are 100% compatible with original part numbers incase if you are looking to substitute part, please check with your car's part number and catalog.